Blasting-cartridge



J. KOGOLSHSEK. BLASTING CARTRIDGE. APPLICATION FILED JULY 1, 1920.

Patented Nov. 9, 1920-.

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JOEZEP KOG-OLSHSEK, OF KLEIN, MONTANA.

BLASTING-CARTRIDGE.

T 0 all w lz-om it may concern.

Be it known that I, 'Jonfirr KOGOLSHSEK, a citizen of Jugo-Slavia, residing at Klein, in the county of Musselshell and State of Montana, have invented, certain new and useful Improvements in Blasting-Cartridges, of which the following is a specification.

This invention relates to certain new and useful improvements in blasting cartridges particularly serviceable in shooting down coal in mines although capable of service generally wherever blasting is carried on.

The primary object of the present invention is to provide a blasting cartridge of the above kind which is extremely simple and durable in construction as well as Ofl'l cient in operation and capable of being manufactured at a very low cost.

Another object of the invention is to provide a blasting cartridge constructed for ignition by a characteristic form of sparking means whereby the use of objectionablefusees or squibs is avoided.

With the above and other objects in view, the present invention consists in the novel form, combination and arrangement, of parts hereinafter more fully described and shown in the accompanying drawing, wherein like reference characters indicate similar parts throughout the several views.

In the drawing,

Figure 1 is a substantially central longitudinal sectional view of a cartridge constructed in accordance with the present invention and shown operatively associated with a shot hole an d.a tamping rod prior to its ignition,

Fig. 2 is an enlarged view of the cartridge partly in longitudinal section and partly in elevation,

Fig. 3 is a transverse sectional view there- I of taken upon line III-III of Fig. 1 and drawn on a larger scale,

Fig. 4 is a view of one end of the tamping rod which is preferably employed for fold- I ing the casing of the cartridge and ig. 5 is a perspective view of one of the sparking terminals.

Referring more. in detail to the several views, the present cartridge is-adapted to be placed in the usual manner within a shot hole 5 and embodies a tubular casing 6 constructed of any desired insulating or insulated material and closed at its inner end by a suitable plug or stopper 7, the other end of the tube being open so as to have the Specification of Letters Patent.

Patented Nov. 9, 1920.

Application filed July 7, 1920. Serial No. 394,443.

powder introduced therein as at 8 and then to receive the packing or stopper 9 in its outer end in the form of waste or the like. The packing 9 and explosive powder 8 is tamped tightly in the casing 6 by any suitable form of tamper, but the preferred form of tamper is shown in the drawing as including a handle or staff 10 having a tamper disk 11 detachably fastened on one end thereof by means of a spring catch 12 carried by the handle 10 and projecting through a sleeve 13 rigid with the disk 11 and into a suitable socket of the handle. This form of tamping rod will give best results and the disk 11 may be removed for of the terminals 14 are formed each with a pair of loops 16 and 17, one upon the extreme end portion of the terminal and the other slightly inwardly from the end, the former loop being adapted for connection with an electric wire 18 and the other loop of each terminal being bolted as at 19 between a pair of ears 20 rigid with and projecting from the adjacent end of the casing 6. It is to be understood that the wire 18 is connected to one terminal while another wire 21 is connected to the other sparking terminal, the wire 18 being extended to a suitable distant point and attached to one contact 22 of a switch 23 whose other contact is connected with a battery 24 at one side. The other side of the battery is connected to the wire 21.

In operation, the casing 6 is placed in the shot hole 5 and a suitable quantity of powder 8 is tamped into the casing about to the section line III- 1H of Fig. 1, and then the two sparking terminals 14 are placed in the casing and secured in their respective positions by bolting as at 19. A little more powder is then tamped into the casing and this is followed up by tamping the packing 9 in the latter whereupon the cartridge is ready for use. The switch 23 is closed so as to allow the current to flow from the battery through the wire 18 and one sparking terminal 14: across the gap between the terminal ends 15 and then back through the other sparking terminal and wire 21 to the battery. Upon the production of a spark between the ends 15 of the terminals, the powder 8 is ignited and the cartridge is caused to explode for shooting down the material being blasted.

From the foregoing description, it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made without departing from the spirit and scope of the in.- vention as hereinafter claimed.

What is claimed as new'is:

A blasting fuse including a tubular casing closed at one end and having an explosive powder and a packing tamped therein so that the packing forms a plug for the other end of the casing, means including a pair of sparking terminals arranged longitudinally within the casing for igniting said explosive powder, each of said sparking terminals having a loop formed therein adjacent its outer end, pairs of ears rigid with the outer end of the casing, each pa r of ears having one of said sparking termlnal loops arranged therebetween, and means to bolt said terminals to said ears.

In testimony whereof I afiix my signature;

J OEZEP KOGQLSHSEK. 

